configure: remove mlp parser dependency from truehd_core bsf

It's no longer needed.
Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -3089,7 +3089,6 @@ hevc_metadata_bsf_select="cbs_h265"
 mjpeg2jpeg_bsf_select="jpegtables"
 mpeg2_metadata_bsf_select="cbs_mpeg2"
 trace_headers_bsf_select="cbs"
-truehd_core_bsf_select="mlp_parser"
 vp9_metadata_bsf_select="cbs_vp9"
 
 # external libraries